Os Guardiães do Descobridor

From Author Wars - https://authorwars.com/books/os-guardiaes-do-descobridor-2908848.html

Overview:

Title: Os Guardiães do Descobridor
Author: Joan Aiken
Year: 2003
Type: Short Fiction

Editions/Publications:

Unknown. A Caverna dos Magos (Unknown, Joan Aiken, Bertrand Brasil, ISBN-10: 8528610365, 254 pages, Trade Paperback, Anthology)